JP5028084B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article that absorbs the excrement of a wearer.

  In general, in an absorbent article that absorbs excrement such as urine and feces of a wearer such as disposable diapers, a three-dimensional gather is formed to prevent leakage (lateral leakage) of the excrement from the left and right ends. . The three-dimensional gather is composed of a non-liquid-permeable sheet with a rubber thread sandwiched between ends thereof, and rises from the main body part toward the skin surface side by contraction of the rubber thread. With this three-dimensional gather structure, excrement is blocked and side leakage is prevented.

  In order to further prevent side leakage, an absorbent article has been proposed in which a plurality of wrinkled surface members extending in the front-rear direction are provided on the skin surface side of the absorbent body (see, for example, Patent Document 1). In this absorbent article, the wrinkles on which the surface members stand are in close contact with the wearer's skin, and side leakage is further prevented.

  However, in this absorbent article, since the wrinkles of the surface member extend in the front-rear direction, excreta that cannot be absorbed immediately by the absorber is diffused in a wide range in the front-rear direction. This is a problem for excrement such as loose stool containing a liquid component and a solid component. For this reason, in order to prevent the excretion from spreading in the front-rear direction, an absorbent article is also proposed in which a surface member having irregularities in both the front-rear direction and the left-right direction is provided on the skin surface side of the absorbent body ( For example, see Patent Document 2.)

JP 2004-181104 A JP 2002-325798 A

  By the way, in the structure of the absorbent article of Patent Document 1 and Patent Document 2 described above, the surface member and the absorbent body are joined without a gap, and there is no space for accumulating solid components. From this, when excrement such as loose stool is processed, a large amount of solid component remains on the surface of the absorbent article after the liquid component is absorbed by the absorbent body. As a result, there is a problem that the wearer feels uncomfortable and the work of wiping off the solid component (stool) adhering to the wearer's skin when the absorbent article is replaced becomes complicated.

  This invention is made | formed in view of the said subject, and aims at providing the absorbent article which can prevent the spreading | diffusion of excrement effectively.

In order to solve the above-mentioned problem, the invention of claim 1 is an absorbent article, which is disposed on the skin surface side of the absorbent body that absorbs the excrement of the wearer, and on the skin surface side. And a diffusion prevention sheet that is formed with wrinkles on the surface on the absorber side and accumulates the excrement on the absorber side to prevent diffusion of the excrement, and the diffusion prevention sheet includes the diffusion prevention sheet. and an elastic member forming the wrinkles on the skin face side and the surface of the absorbent side of the sheet, is bonded to another member at a peripheral region thereof, the inner side than at least the peripheral region of the major surface of the absorbent body side the area is the other member and non-adhesive Rutotomoni include excrement receptacle, a sheet-like dispersed with many holes, the elastic member is distributed to the excrement receptacle, the excretion It forms the wrinkles at the object receiving body.

  Moreover, invention of Claim 2 is further provided with the surface sheet arrange | positioned in the said absorbent surface of Claim 1 at the said skin surface side rather than the said diffusion prevention sheet, The said diffusion prevention sheet is the said skin surface. The main surface on the side is bonded to the top sheet, and the entire main surface on the absorber side is not bonded to other members.

  Moreover, invention of Claim 3 is an absorbent article of Claim 2, The said surface sheet is provided with an opening part, and a part of said diffusion prevention sheet is exposed to the skin surface side from the said opening part.

  According to a fourth aspect of the present invention, in the absorbent article according to any one of the first to third aspects, a nonwoven fabric sheet is provided between the absorber and the diffusion prevention sheet.

  The invention according to claim 5 is the absorbent article according to claim 4, wherein the absorbent article extends from the outside of the end of the absorber toward the center of the absorber in the left-right direction corresponding to the left and right of the wearer. And a side sheet that rises from a predetermined standing position to form a three-dimensional gather, and the nonwoven fabric sheet is at least from the center of the absorbent body to the outside of the standing position of the side sheet in the left-right direction. Extend.

  Moreover, invention of Claim 6 is the absorbent article of Claim 4, WHEREIN: The sheet | seat of the said nonwoven fabric covers the whole main surface by the side of the skin of the said absorber.

The invention according to claim 7 is the absorbent article according to any one of claims 1 to 6 , wherein the excrement receptacle is provided with a plurality of tape-like members arranged in a lattice shape, and each tape-like member is provided. The through-hole is formed by a gap therebetween.

The invention according to claim 8 is the absorbent article according to claim 6 or 7 , wherein an opening area of each of the plurality of through holes is 1 mm ² or more and 900 mm ² or less in a non-expanded state of the heel. .

According to the invention of claims 1 to 8, since the inside of the region in the main surface of the absorption side of the diffusion barrier sheet is the other member and non-adhesive, waste a lot of amount absorbed side of the diffusion barrier sheet Can be accumulated, and the diffusion of excreta can be effectively prevented.
Moreover, since a wrinkle can be formed on the diffusion preventing sheet to give an uneven distribution, excrement can be accumulated in the unevenness.
Moreover, since a wrinkle can be formed in an excretion receptacle body and uneven distribution can be given, excrement can be accumulate | stored in an unevenness | corrugation. At the same time, since a large number of through holes are dispersed, excrement can be quickly transmitted to the absorber side.

  In particular, according to the invention of claim 2, since the diffusion preventing sheet is bonded to the surface sheet on the main surface on the skin surface side, the entire main surface on the absorber side can be non-adhered, and more An amount of excreta can be accumulated.

  In particular, according to the invention of claim 3, since the diffusion preventing sheet is exposed to the skin surface side from the opening of the top sheet, it is possible to directly receive excrement, and to efficiently accumulate excrement. it can.

  In particular, according to the invention of claim 4, since the nonwoven fabric sheet is provided between the absorbent body and the diffusion prevention sheet, the absorbent body is caused by rubbing of the diffusion prevention sheet or contact with accumulated excrement. Is prevented from being damaged.

  In particular, according to the invention of claim 5, leakage of the material contained in the absorber is prevented.

  In particular, according to the invention of claim 6, leakage of the material contained in the absorber is prevented.

In particular, according to the invention of claim 7 , various uneven distributions including through holes can be easily formed in the excrement receiver, and excrement can be effectively accumulated in the uneven distribution.

In particular, according to the invention of claim 8 , it is possible to prevent the backflow of excrement while maintaining the absorption efficiency of the excrement.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1. First Embodiment>
<1-1. Configuration of absorbent article>
FIG. 1 is a plan view showing an absorbent article 10 according to the first embodiment. FIG. 2 is a schematic cross-sectional view at the position II-II in FIG. This absorbent article 10 is a pad-type disposable diaper for absorbing a wearer's excrement, and is used in combination with other diapers or underwear of a tape type or a pants type.

  FIG. 1 shows a state where the wearer wears the absorbent article 10 as viewed from the side facing the wearer's skin surface (hereinafter simply referred to as “skin surface side”). Moreover, in FIG. 2 (FIG. 13 and FIG. 14 mentioned later are also the same), the adhesion | attachment location of each member of the absorbent article 10 is typically shown by the area | region 5 which performed cross hatching. For the convenience of illustration, the members that are shown separated from each other are connected by a dashed line. As a method for bonding such members together, various known methods such as bonding using a hot melt adhesive, thermal welding, and ultrasonic welding may be employed.

  Moreover, below, when the absorbent article 10 is mounted so as to cover the wearer's crotch, the direction of the absorbent article corresponding to the front-rear direction of the wearer's crotch (direction from the abdomen to the back) (FIG. 1). 1) is referred to as “front-rear direction”, and the direction of the absorbent article corresponding to the left-right direction (lateral direction in FIG. 1) is referred to as “left-right direction”. Moreover, the side of the absorbent article corresponding to the front side (abdomen side) of the wearer's crotch is referred to as “front side”, and the side of the absorbent article corresponding to the back side (back side) of the wearer's crotch Is called “rear side”. In FIG. 1, the upper side in the figure is the front side of the absorbent article 10.

  The absorbent article 10 has, as its basic structure, an absorbent body 14 that absorbs a liquid component (such as urine) of excrement sandwiched between a liquid-permeable upper layer sheet 11 and a water-repellent lower layer sheet (back sheet) 13. It has a laminated structure (see FIG. 2). The upper layer sheet 11 is disposed on the skin surface side of the absorbent body 14, and the lower layer sheet 13 is disposed on the side opposite to the skin surface side of the absorbent body 14. All of these members are formed into a gourd shape that extends in the front-rear direction and has a constriction at the center in the front-rear direction (see FIG. 1). These members may be formed into other shapes such as a rectangle or an hourglass shape.

  The upper layer sheet 11 is disposed so as to cover the entire main surface of the absorbent body 14 on the skin surface side, and is bonded to the lower layer sheet 13 at an end position that does not overlap the absorbent body 14. Therefore, the absorber 14 is completely contained in the closed space R <b> 1 formed by the upper layer sheet 11 and the lower layer sheet 13. When the liquid component of excrement reaches such a laminated structure, it passes through the upper layer sheet 11 and is then absorbed by the absorber 14. And the exudation to the exterior of the excretion absorbed by the absorber 14 is prevented by the lower layer sheet 13.

  As the material for the upper layer sheet 11, a liquid-permeable nonwoven fabric is employed. As such a liquid-permeable nonwoven fabric, the surface of a nonwoven fabric using hydrophilic fibers (cellulose, rayon, cotton, etc.) or hydrophobic fibers (polypropylene, polyethylene, polyester, polyamide, nylon, etc.) is a surfactant. Nonwoven fabric that has been treated to make it liquid-permeable. On the other hand, the material for the lower layer sheet 13 is preferably a water-repellent nonwoven fabric using hydrophobic fibers (polypropylene, polyethylene, polyester, polyamide, nylon, etc.). Moreover, as a material of the lower layer sheet 13, a plastic film, a composite material of a nonwoven fabric and a plastic film, or the like may be used.

  Examples of the absorber 14 include a mixture of a pulverized hydrophilic fiber aggregate layer such as pulp fiber or cellulose fiber and a granular polymer (polymer water absorbent). Since the granular polymer is easily separated from the absorbent body 14, the absorbent body 14 is generally wrapped with tissue paper for the purpose of preventing separation of the polymer. However, in the absorbent article 10 of the present embodiment, the upper layer sheet 11 covers the entire main surface on the skin surface side of the absorber 14, and the absorber 14 is completely contained in the closed space R1. Therefore, leakage of the polymer can be prevented. For this reason, a tissue paper becomes unnecessary and manufacturing cost can be reduced.

  Moreover, the diffusion prevention sheet 1 for preventing the diffusion of excrement is disposed on the skin surface side of the laminated structure of the upper layer sheet 11, the absorber 14, and the lower layer sheet 13 as described above. This anti-diffusion sheet 1 is also called a surface liner, and has a function of preventing widespread diffusion of loose excrement including liquid components such as loose stool and solid components. The diffusion prevention sheet 1 has a substantially rectangular outer shape, and is arranged so that the longitudinal direction thereof is along the front-rear direction of the absorbent article 10.

  FIG. 3 is a plan view showing the diffusion prevention sheet 1. 4 is a cross-sectional view taken along the line IV-IV in FIG.

  The diffusion prevention sheet 1 includes a sheet-like excrement receptacle 20 that constitutes a surface that receives excrement. The excrement receptacle 20 has a substantially rectangular outer shape, and includes a plurality of tape-like members extending in a strip shape arranged in a lattice shape. Specifically, the excretion receptacle 20 includes a plurality of tape-like members (hereinafter referred to as short-side tape-like members) 2 that extend substantially in parallel along the short direction and a plurality of pieces that extend substantially in parallel along the longitudinal direction. A tape-like member (hereinafter referred to as a longitudinal tape-like member) 3 is formed by bonding with an adhesive. Therefore, the plurality of short tape-shaped members 2 and the plurality of long tape-shaped members 3 are arranged substantially orthogonally. The width of these tape-like members 2 and 3 is preferably 1 mm or more and 30 mm or less, more preferably 3 mm or more and 20 mm or less, and further preferably 5 mm or more and 15 mm or less.

  The plurality of tape-like members extending along the same direction are arranged on the same main surface of the excretion receptacle 20. In other words, the plurality of short tape-shaped members 2 and the plurality of long tape-shaped members 3 are arranged on different main surfaces of the excretion receptacle 20. That is, a plurality of short tape-like members 2 are arranged on one main surface of the excretion receptacle 20, and a plurality of long tape-like members 3 are arranged on the other main surface.

  In the absorbent article 10, the diffusion prevention sheet 1 is disposed so that the main surface of the excretion receptacle 20 on which the short tape-shaped member 2 is disposed is on the skin surface side (see FIG. 1). Therefore, in the absorbent article 10, the plurality of short tape-like members 2 are arranged on the skin surface side along the left-right direction of the absorbent article 10, and the plurality of long tape-like members 3 are arranged in the front-rear direction of the absorbent article 10. Along the side where the absorber 14 exists (hereinafter referred to as “absorber side”).

  Each short tape-shaped member 2 is composed of two tape-shaped nonwoven fabrics 21 and 22 (see FIG. 4). These two tape-shaped non-woven fabrics 21 and 22 are bonded to each other with a thread-like elastic member 41 extending in the short direction sandwiched therebetween. Therefore, when the thread-like elastic member 41 contracts, as shown in FIG. 3, the tape-shaped nonwoven fabrics 21 and 22 contract and a large number of irregular wrinkles are formed on the surface thereof.

  Similarly, each longitudinal tape-shaped member 3 is composed of two tape-shaped nonwoven fabrics 31 and 32 (see FIG. 4). The two tape-shaped nonwoven fabrics 31 and 32 are bonded with a thread-like elastic member 42 extending in the longitudinal direction between them. Therefore, when the thread-like elastic member 42 contracts, the tape-shaped nonwoven fabrics 31 and 32 contract and a large number of irregular wrinkles are formed on the surface thereof. Thereby, the thread-like elastic members 41 and 42 are distributed and disposed throughout the excrement receptacle 20, and the excrement receptacle 20 can be expanded and contracted.

  As a material for the tape-shaped nonwoven fabrics 21, 22, 31, and 32, a liquid-permeable nonwoven fabric as described above is employed in order to increase the absorption efficiency of excreta. Moreover, as a raw material of the tape-shaped nonwoven fabrics 21, 22, 31, and 32, a plastic film having minute openings may be used. In addition, as the material for the thread-like elastic members 41 and 42, an elastic stretchable material used for general absorbent articles such as polyurethane thread and natural rubber can be used. Adhesion techniques such as adhesion using a hot melt adhesive, thermal welding, and ultrasonic welding can be employed for bonding the thread-like elastic members 41 and 42.

  Further, the plurality of short tape-like members 2 are arranged in a state of being separated from each other, and the plurality of long tape-like members 3 are also arranged in a state of being separated from each other. Thereby, in the whole main surface of the excretion receptacle 20, a large number of rectangular through-holes (openings that penetrate from one main surface to the other main surface) in each of the longitudinal direction and the short-side direction. 91 is formed in a dispersed manner. Thus, by arranging the plurality of short tape-like members 2 and the plurality of long tape-like members 3 in different directions, the through holes 91 are formed in a dispersed manner by the gaps between the tape-like members 2 and 3. Therefore, no heat treatment is required for the formation of the through hole 91.

  As shown in FIG.1 and FIG.2, the diffusion prevention sheet 1 which has the said structure is the skin surface side of the upper layer sheet | seat 11, and the part which leaned to the back side rather than the center part of the front-back direction of the absorbent article 10. Be placed. Thus, the diffusion prevention sheet 1 can receive a stool reliably by arrange | positioning the diffusion prevention sheet 1 in the back side corresponded to a wearer's buttocks.

  Further, a surface sheet 16 is provided on the further skin side of the diffusion preventing sheet 1. In the topsheet 16, one elliptical opening 17 is formed at a position corresponding to the wearer's buttocks. The diffusion preventing sheet 1 has a peripheral area on the skin surface side covered with the surface sheet 16, and a partial area (area inside the peripheral area) is exposed to the skin surface side from the opening 17 of the surface sheet 16. Will do. Thereby, the diffusion prevention sheet 1 can receive excretion directly.

  Thus, since the peripheral area | region of the diffusion prevention sheet 1 is covered with the surface sheet 16, the discomfort given to a wearer by the level | step difference formed with the edge part of the diffusion prevention sheet 1 and the upper layer sheet | seat 11 is relieve | moderated. . Examples of the material for the topsheet 16 include the liquid-permeable nonwoven fabric as described above so as not to impair the excretion absorption efficiency.

  The surface sheet 16 has substantially the same size and shape as the upper layer sheet 11 and is bonded to the upper layer sheet 11 at the end of the main surface on the absorber side. Further, the diffusion preventing sheet 1 is bonded and fixed to the surface sheet 16 at the peripheral region of the main surface on the skin surface side, specifically, at both end portions in the front-rear direction and both end portions in the left-right direction (FIG. 2). reference.). In FIG. 1 as well, an adhesion portion between the diffusion prevention sheet 1 and the upper layer sheet 11 is indicated by a cross-hatched region 5. And as for the diffusion prevention sheet 1, the whole main surface at the side of the absorber is made non-adhesive with other members. Therefore, a space R <b> 2 is formed between the diffusion preventing sheet 1 and the upper layer sheet 11 on the absorber side.

  Moreover, the side seat | sheet 12 is provided in the both ends of the left-right direction of the absorbent article 10 along the longitudinal direction, respectively. Each of the side sheets 12 extends from the outside of the end position P2 of the absorber 14 to the inside of the end position P2 toward the center of the absorber 14 in the left-right direction. And the side seat | sheet 12 each stands | starts up toward the skin surface side from the predetermined standing position P1 inside the edge part position P2, and forms the solid gather 12a.

  A thread rubber 15 is disposed at the end of each side sheet 12 on the inner side in the left-right direction (center side of the absorbent article 10), while the end on the outer side in the left-right direction (end part side of the absorbent article 10). The part is bonded to the lower layer sheet 13. Further, the vicinity region outside the standing position P <b> 1 of each side sheet 12 is bonded to the top sheet 16. With this structure, when the rubber thread 15 contracts, the portion of each side sheet 12 that is on the inner side of the standing position P1 rises to the skin surface side and functions as a three-dimensional gather 12a. By this three-dimensional gather 12a, side leakage of excrement in the absorbent article 10 is prevented. Examples of the material for the side sheet 12 include a liquid-impermeable plastic film and a water-repellent nonwoven fabric. The diffusion prevention sheet 1 is disposed between the pair of solid gathers 12a (between one standing position P1 and the other standing position P1).

<1-2. Use of absorbent articles>
Next, the action of the absorbent article 10 when the absorbent article 10 having the above structure is used will be described. Below, it demonstrates supposing the case where the loose excretion containing liquid components and solid components, such as loose stool, is excreted.

  Such loose excrement flows in a state where a liquid component and a solid component are mixed. The excreted excreted matter is received by the main surface on the skin side of the diffusion preventing sheet 1. And excrement enters between the plurality of short tape-like members 2, and further enters the absorber side of the diffusion preventing sheet 1 through the plurality of through holes 91 and the like.

  On the skin surface side of the diffusion preventing sheet 1, excrement flow is blocked by the plurality of short tape-like members 2. Since the plurality of short tape-shaped members 2 are along the left-right direction of the absorbent article 10, the flow of excrement in the front-rear direction (longitudinal direction of the diffusion prevention sheet 1) is effectively suppressed. The short tape-like member 2 effectively functions as a wall for blocking the flow of excrement because the wings are formed by the thread-like elastic member 41 and the substantial thickness thereof is increased.

  On the other hand, on the absorber side of the diffusion preventing sheet 1, excrement enters between the plurality of longitudinal tape-like members 3 along the front-rear direction. The longitudinal tape-shaped member 3 also has a substantial thickness due to the formation of wrinkles by the thread-like elastic member 42, so that a relatively large amount of excrement can flow in. At the same time, excrement passes between the ridges formed on the longitudinal tape-shaped member 3 and spreads in the left-right direction.

  On both main surfaces of the excrement receptacle 20 of the diffusion preventing sheet 1, the short tape-like members 2, the long tape-like members 3, the through holes 91, and the tape-like members 2, 3 themselves Various uneven distributions are given by wrinkles. That is, a part of the uneven distribution is given as a wrinkle distribution of the tape-like members 2 and 3 themselves. In particular, solid components of excreta can be accumulated in these irregularities. Since the uneven distribution is irregular due to irregular wrinkles of the tape-like members 2 and 3, a wide variety of excrement can be retained. Further, since the substantial thickness of the tape-like members 2 and 3 is increased by the thread-like elastic members 41 and 42, the size of the unevenness can be increased and a large amount of excrement can be accumulated.

  In addition, a large number of through holes 91 are formed in the main surface of the diffusion prevention sheet 1 and the absorber side of the diffusion prevention sheet 1 is not bonded, and a space R2 is formed between the upper layer sheet 11 and many An amount of excrement can be transmitted to the absorber side of the diffusion preventing sheet 1 and accumulated in the space R2 on the absorber side of the diffusion preventing sheet 1. As a result, diffusion of excrement to a wide range is effectively prevented, and the amount of excrement remaining on the skin surface side of the absorbent article 10 can be reduced.

  Further, the liquid component in the excrement is absorbed by the absorber 14 when reaching the upper layer sheet 11. Since a large number of through holes 91 are dispersedly formed on the main surface of the diffusion preventing sheet 1 and the excretion receptacle 20 is composed of a liquid-permeable nonwoven fabric, particularly the liquid component of the excrement is quickly contained in the upper layer sheet 11. It will lead to. Moreover, since the excrement spreads in the left-right direction on the absorber side of the diffusion preventing sheet 1, the liquid component is absorbed in a wide range of the absorber 14. Therefore, the absorption efficiency of the liquid component of excrement by the absorber 14 can be greatly improved. As a result, the flow amount of the liquid component is reduced and the excrement flow itself is suppressed, so that the excrement is further prevented from spreading over a wide range.

  The large number of through holes 91 formed in the diffusion preventing sheet 1 serve as a path for allowing excrement to pass to the absorber side, and also function as a space for storing and accumulating excrement. Since the large number of through holes 91 are distributed substantially periodically over the entire main surface of the diffusion preventing sheet 1, the absorption efficiency and the accumulated amount of excrement can be improved uniformly with respect to the entire diffusion preventing sheet 1. As a result, even if the excrement is received at any position of the diffusion prevention sheet 1, the diffusion of the excrement is effectively prevented.

In addition, if each opening area of these through-holes 91 is too small, the passing amount and accumulation amount of excrement will fall, but conversely, if the opening area is too large, excrement that has once entered the absorbent body will be on the skin surface. There is also the possibility of backflowing to the side. For this reason, each opening area of these through-holes 91 is preferably in a non-extended state of the uneven distribution (a state in which the thread-like elastic members 41 and 42 are contracted and the wrinkles due to the thread-like elastic members 41 and 42 are not elongated). is a 1 mm ² or more 900 mm ² or less, more preferably 4 mm ² or more 700 mm ² or less, more preferably 10 mm ² or more 400 mm ² or less. Thereby, the backflow of excrement can be prevented, maintaining the absorption efficiency of excrement. In addition, even if the backflow of excrement arises, the surface sheet 16 can prevent exposure of such excrement to the skin surface side, and can reduce the area where excrement touches the skin.

  As described above, in the absorbent article 10 according to the present embodiment, the entire main surface on the absorber side of the diffusion preventing sheet 1 is not bonded, and the space R2 is formed between the upper layer sheet 11 and this space. Many excreta can be accumulated in R2. For this reason, it is possible to effectively prevent the excrement from spreading over a wide range. As a result, the area where excrement touches the skin of the wearer can be reduced, skin irritation and discomfort can be prevented, and the wiping work of excrement adhering to the skin (particularly, its solid components) can be reduced.

  In the absorbent article 10, the upper layer sheet 11 disposed between the absorbent body 14 and the diffusion prevention sheet 1 is not a relatively fragile tissue paper but a relatively strong nonwoven fabric. Since the main surface on the absorber side of the diffusion preventing sheet 1 is non-adhesive, it may move relative to the absorber 14 in accordance with the wearer's movement. Further, in the absorbent article 10, a large amount of excrement is accumulated in the space R <b> 2 on the absorber side of the diffusion prevention sheet 1. For this reason, if the upper layer sheet 11 is composed of a relatively fragile tissue paper, the tissue paper may be easily broken due to rubbing with the diffusion preventing sheet 1 or contact with excrement, and the absorber 14 may be damaged. On the other hand, in the absorbent article 10, since the upper layer sheet 11 is made of a relatively strong nonwoven fabric, such damage to the absorber 14 can be effectively prevented.

<2. Second Embodiment>
Next, a second embodiment will be described. The absorbent article according to the second embodiment is different from the first embodiment only in the structure of the diffusion prevention sheet. FIG. 5 is a plan view of the diffusion prevention sheet 1b according to the second embodiment as viewed from the skin surface side. FIG. 6 is a cross-sectional view at the position VI-VI in FIG. The diffusion prevention sheet 1b of the second embodiment is different from the diffusion prevention sheet 1 of the first embodiment in the structure relating to the longitudinal tape-like member 3.

  In the second embodiment, no elastic member such as the thread-like elastic member 42 is bonded to each longitudinal tape-shaped member 3, and each longitudinal tape-shaped member 3 is constituted by only one tape-shaped nonwoven fabric 31. The Therefore, no ridges are formed on the plurality of longitudinal tape-like members 3. By comprising in this way, a required material can be decreased compared with the diffusion prevention sheet 1 of 1st Embodiment, and manufacturing cost can be reduced.

<3. Third Embodiment>
Next, a third embodiment will be described. The absorbent article according to the third embodiment is also different from the first embodiment only in the structure of the diffusion prevention sheet. FIG. 7 is a plan view of the diffusion prevention sheet 1c according to the third embodiment as viewed from the skin side. 8 is a cross-sectional view at the position VIII-VIII in FIG. The diffusion prevention sheet 1c according to the third embodiment is different from the diffusion prevention sheet 1 according to the first embodiment in the elastic member that forms the ridges on the tape-like members 2 and 3.

  In the third embodiment, tape-like elastic members 43 and 44 having substantially the same width as the tape-like members 2 and 3 are used as elastic members to be bonded to the tape-like members 2 and 3. Examples of the material of the tape-like elastic members 43 and 44 include natural rubber formed into a tape shape, synthetic rubber such as styrene-butadiene, butadiene, isoprene, and neoprene, elastic polyolefin, urethane, and elastic nonwoven fabric. It is done.

  When the tape-like elastic members 43 and 44 are bonded to the tape-like members 2 and 3, it is not necessary to sandwich the tape-like elastic members 43 and 44 with the nonwoven fabric. For this reason, each tape-shaped member 2 and 3 is comprised by the tape-shaped nonwoven fabric 21 and 31, respectively. More specifically, one short tape-shaped member 2 is composed of a single tape-shaped nonwoven fabric 21, and a tape-shaped elastic member 43 is bonded to the single tape-shaped nonwoven fabric 21 in an expanded state. One longitudinal tape-like member 3 is composed of one piece of tape-like nonwoven fabric 31, and a tape-like elastic member 44 is bonded to the one piece of tape-like nonwoven fabric 31 in an expanded state. Thereby, a lot of irregular wrinkles are formed on the surface of the tape-like members 2 and 3 as in the first embodiment.

  By using the tape-like elastic members 43 and 44 in this way, each tape-like member 2 and 3 can be composed of a single piece of tape-like nonwoven fabric 21 and 31, so the diffusion preventing sheet 1 of the first embodiment and In comparison, the necessary materials can be reduced, and the manufacturing cost can be reduced.

<4. Fourth Embodiment>
Next, a fourth embodiment will be described. The absorbent article according to the fourth embodiment is also different from the first embodiment only in the structure of the diffusion prevention sheet. FIG. 9 is a plan view of a diffusion prevention sheet 1d according to the fourth embodiment as viewed from the skin side. FIG. 10 is a cross-sectional view taken along the line XX in FIG. The diffusion prevention sheet 1d of the fourth embodiment is different from the diffusion prevention sheet 1 of the third embodiment in the structure relating to the longitudinal tape-like member 3.

  In the fourth embodiment, no nonwoven fabric is used for each longitudinal tape-like member 3, and each longitudinal tape-like member 3 is composed of only one tape-like elastic member 33 having a relatively large thickness. . Examples of the material of the tape-like elastic member 33 include a polyurethane film having a thickness of about 2 mm to 5 mm and formed into a tape shape. By comprising in this way, a nonwoven fabric becomes unnecessary regarding the longitudinal tape-shaped member 3, a required material can be decreased compared with the diffusion prevention sheet 1c of 3rd Embodiment, and manufacturing cost can further be reduced. .

  In this embodiment, the structure of the short tape-like member 2 is the same as that of the third embodiment (a structure in which a tape-like elastic member is bonded to a single tape-like nonwoven fabric 21). A structure similar to that of the first embodiment (a structure in which two tape-like nonwoven fabrics 21 and 22 are bonded with the thread-like elastic member 41 interposed therebetween) may be employed.

<5. Fifth embodiment>
Next, a fifth embodiment will be described. The absorbent article according to the fifth embodiment is also different from the first embodiment only in the structure of the diffusion prevention sheet. FIG. 11: is the top view which looked at the diffusion prevention sheet 1e which concerns on 5th Embodiment from the skin surface side. 12 is a cross-sectional view at the position XII-XII in FIG. The diffusion prevention sheet 1e according to the fifth embodiment is different from the diffusion prevention sheet 1 according to the first embodiment in a method of combining a plurality of short tape-like members 2 and a plurality of longitudinal tape-like members 3. ing.

  In the fifth embodiment, although the structure itself relating to the tape-like members 2 and 3 is the same as that of the first embodiment, a plurality of short tape-like members 2 and a plurality of longitudinal tape-like members 3 are provided. They are used like wefts and warps in fabrics, and are interlaced according to the same rules as fabrics. Thereby, the excretion receptacle 20 has a fabric structure in which a plurality of short tape-like members 2 and a plurality of longitudinal tape-like members 3 are interwoven. Thus, the excrement receptacle 20 can be formed, without requiring an adhesive agent, by making the structure of the excrement receptacle into a woven fabric structure.

  In this diffusion prevention sheet 1e, since the structure of the excretion receptacle 20 is a woven structure, the diversity of the unevenness | corrugation formed in the excretion receptacle 20 can be increased. As a result, since various excreta can be accumulated, it is possible to further prevent the excrement from spreading.

  Although the woven fabric structure shown in FIG. 11 is a plain weave, other woven fabric structures such as oblique weave and satin weave may be used. Further, the structure relating to the tape-like members 2 and 3 themselves used as the weft and the warp is not limited to the structure of the first embodiment, and any of the structures described in the first to fourth embodiments. It may be of a structure.

<6. Other embodiments>
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible. Hereinafter, such other embodiments will be described. Of course, you may combine the form demonstrated below suitably.

  In the said embodiment, although the diffusion prevention sheet 1 demonstrated that it adhere | attached with the surface sheet 16 in the main surface at the skin surface side, as shown in FIG. 13, the peripheral area | region of the main surface at the absorber side of the diffusion prevention sheet 1 May be adhered to the upper layer sheet 11. Also by this, in the main surface on the absorber side of the diffusion preventing sheet 1, the region inside the peripheral region where the bonding is performed is not bonded to other members, and a space R <b> 3 is formed between the upper layer sheet 11. The As described above, if at least the inner region of the main surface on the absorber side of the diffusion preventing sheet 1 is not bonded to other members, a space R3 can be formed between the upper layer sheet 11 and a large amount in the space R3. It becomes possible to accumulate the excrement. In this case, the surface sheet 16 may be omitted, and the vicinity region outside the standing position P1 of the side sheet 12 may be adhered to the upper layer sheet 11.

  Moreover, in the said embodiment, although it demonstrated that the upper layer sheet | seat 11 was arrange | positioned so that the whole main surface by the side of the skin of the absorber 14 might be covered, as shown in FIG. What is necessary is just to extend from the center of the absorber 14 to the outer side of the standing position P1 of the side seat 12 at least. In this way, the absorber 14 is completely contained in a closed space formed by the upper layer sheet 11, the lower layer sheet 13, and the pair of side sheets 12. Accordingly, even in this case, leakage of the polymer can be prevented. In this case, the standing position P1 of the side seat 12 may be either inside or outside the end position P2 of the absorber 14.

  In the above embodiment, the diffusion prevention sheet 1 is described as being bonded to other members at both ends in the front-rear direction and both ends in the left-right direction. You may make it adhere | attach only in both ends.

  Moreover, although the said embodiment demonstrated that a liquid-permeable nonwoven fabric was employ | adopted as a raw material of the tape-shaped nonwoven fabrics 21, 22, 23, and 24, you may employ | adopt a water-repellent nonwoven fabric conversely. Examples of the water-repellent nonwoven fabric include nonwoven fabrics using hydrophobic fibers (polypropylene, polyethylene, polyester, nylon, etc.). Thus, when a water-repellent nonwoven fabric is employ | adopted, it can prevent effectively the excrement which once entered the absorber side returns to the skin surface side. Even if a water-repellent nonwoven fabric is adopted, the absorption efficiency of excrement is not greatly reduced because a large number of through holes 91 are formed in the main surface of the diffusion preventing sheet 1. In addition, as a material for the tape-like elastic members 43, 44, and 33 of the third and fourth embodiments, a water-repellent elastic member may be employed. Also in this case, it is possible to effectively prevent excrement that has once entered the absorber side from returning to the skin surface side.

  Moreover, although the said embodiment demonstrated that a wrinkle was formed in the excretion receptacle 20 by an elastic member, you may form a wrinkle by heat processing. However, the wrinkles formed by the heat treatment are generally regular. From the viewpoint of forming irregular wrinkles on the excretion receptacle 20 and preventing the diffusion of various excrement due to the irregular uneven distribution provided thereby, an elastic member is used as in the above embodiment. Is desirable.

  Moreover, in the said embodiment, although the some tape-like member 2 and the some tape-like member 3 which form the excretion receptacle 20 were orthogonally arranged, if these can be arrange | positioned in a different direction, it will be a right angle You may cross at different angles. Moreover, you may arrange | position the some tape-shaped members 2 and 3 so that it may extend in directions other than the direction (short direction, long direction) prescribed | regulated by the external shape of the excretion receptacle 20.

  In the above-described embodiment, the absorbent article is described as a pad-type disposable diaper. However, the technology described above is suitably employed even in other types of disposable diapers such as a pants type and a tape type. Is possible.

It is a top view which shows an absorbent article. It is sectional drawing in the II-II position of FIG. It is a top view which shows the diffusion prevention sheet which concerns on 1st Embodiment. It is sectional drawing in the IV-IV position of FIG. It is a top view which shows the diffusion prevention sheet which concerns on 2nd Embodiment. It is sectional drawing in the VI-VI position of FIG. It is a top view which shows the diffusion prevention sheet which concerns on 3rd Embodiment. It is sectional drawing in the VIII-VIII position of FIG. It is a top view which shows the diffusion prevention sheet which concerns on 4th Embodiment. It is sectional drawing in the XX position of FIG. It is a top view which shows the diffusion prevention sheet which concerns on 5th Embodiment. It is sectional drawing in the XII-XII position of FIG. It is a figure which shows another example of the cross section in the II-II position of FIG. It is a figure which shows another example of the cross section in the II-II position of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Diffusion prevention sheet 10 Absorbent article 11 Upper layer sheet 12 Side sheet 12a Three-dimensional gather 13 Lower layer sheet 14 Absorber 16 Top sheet 17 Opening

Claims (8)

An absorbent article,
An absorber that absorbs the excrement of the wearer;
Arranged on the skin surface side of the absorber, wrinkles are formed on the skin surface side and the surface of the absorber side, and the excrement is accumulated on the absorber side to prevent diffusion of the excrement. A diffusion prevention sheet;
With
The diffusion prevention sheet is
It comprises an elastic member that forms the wrinkles on the skin surface side and the absorber side surface of the diffusion prevention sheet,
As the peripheral region are bonded with other members, a region inside the at least the peripheral region of the major surface of the absorbent body side is the other member and non-adhesive Rutotomoni,
Including a sheet-like excrement receptacle in which a large number of through holes are dispersed,
The elastic member is
Absorbent article wherein are distributed to the excrement receptacle, characterized that you form the wrinkles on the excrement receiving body. The absorbent article according to claim 1,
A surface sheet disposed closer to the skin surface than the diffusion preventing sheet,
Further comprising
The said diffusion prevention sheet | seat is adhere | attached with the said surface sheet in the main surface by the side of the said skin surface, The whole main surface by the side of the said absorber is made non-adhesive with another member, The absorbent article characterized by the above-mentioned. The absorbent article according to claim 2,
The top sheet has an opening,
A part of said diffusion prevention sheet is exposed to the skin surface side from the said opening part, The absorbent article characterized by the above-mentioned. In the absorptive article according to any one of claims 1 to 3,
A non-woven sheet between the absorber and the diffusion prevention sheet;
An absorbent article comprising: The absorbent article according to claim 4,
In the left-right direction corresponding to the left and right of the wearer, a side sheet that extends from the outside of the end of the absorber toward the center of the absorber and rises from a predetermined standing position to form a three-dimensional gather,
Further comprising
The absorbent article, wherein the sheet of nonwoven fabric extends at least from the center of the absorbent body to the outside of the standing position of the side sheet in the left-right direction. The absorbent article according to claim 4,
The non-woven fabric sheet covers the entire main surface on the skin side of the absorbent body. The absorbent article according to any one of claims 1 to 6 ,
The excrement receptacle is provided with a plurality of tape-shaped members arranged in a lattice shape, and the through holes are formed by gaps between the tape-shaped members. The absorbent article according to claim 6 or 7 ,
An opening area of each of the plurality of through holes is 1 mm ² or more and 900 mm ² or less in a non-expanded state of the ridge.

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